bad day in the market

well, how do i start? i quess the best way is to admit that i find it hard to learn a lesson when it comes to trading the market. i know when a trade looks bad, or a loss goes to a certain point i should get out, but i keep making the same mistake. staying in, waiting for a recovery, and getting in deeper, waiting, getting in deeper, and then taking a big loss. i hope posting my errors to the world will do something to help me overcome this constant error in judgement. yes, i can only hope. my best advice is take the loss, and wait for a better trade, but don't let that loss put you out.